Watt | Define Watt at Dictionary.com watt noun 1. the standard unit of power in the International System of Units (SI), equivalent to one joule per second and equal to the power in a circuit in which a current of one ampere flows across a potential difference of one volt. Abbreviation: W, w. 1882; named after J. Watt Watt James, 1736–1819, Scottish engineer and inventor. Dictionary.com Unabridged Examples from the Web for watt Expand Contemporary Examples Blanche was a fragile white moth beating against the unbreakable sides of a 1000 watt bulb. Why Democrats Should End Nomination Filibusters Jamelle Bouie October 30, 2013 watt never did anything to regain his position, although it bothered him for the rest of his life. James Watt Andrew Carnegie watt says this is the first book which professes to give an account of the Canting language of thieves and vagabonds. The Slang Dictionary John Camden Hotten British Dictionary definitions for watt Expand noun 1.

the derived SI unit of power, equal to 1 joule per second; the power dissipated by a current of 1 ampere flowing across a potential difference of 1 volt. 1 watt is equivalent to 1.341 × 10–3 horsepower W Word Origin C19: named after James Watt Watt noun 1. James. 1736–1819, Scottish engineer and inventor. His fundamental improvements to the steam engine led to the widespread use of steam power in industry Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Word Origin and History for watt Expand unit of electrical power, 1882, in honor of James Watt (1736-1819), Scottish engineer and inventor.

Online Etymology Dictionary, © 2010 Douglas Harper Watt - definition of watt by The Free Dictionary Watt - definition of watt by The Free Dictionary An SI-derived unit of power equal to one joule per second. See Table at measurement . [After James Watt.] (wɒt) n (Biography) James. 1736–1819, Scottish engineer and inventor. His fundamental improvements to the steam engine led to the widespread use of steam power in industry watt (wɒt) n (Units) the derived SI unit of power, equal to 1 joule per second; the power dissipated by a current of 1 ampere flowing across a potential difference of 1 volt. 1 watt is equivalent to 1.341 × 10–3 horsepower. Symbol: W [C19: named after James Watt] watt (wɒt) n. the SI unit of power, equivalent to one joule per second and equal to the power in a circuit in which a current of one ampere flows across a potential difference of one volt. Abbr.: W , w [1882; after J.

Watt ] James, 1736–1819, Scottish engineer and inventor. watt (wŏt) A unit used to measure power, equal to one joule of work per second. In electricity, a watt is equal to the amount of current (in amperes) multiplied by the amount of potential (in volts). watt 1. The unit of power: one watt equals one joule per second. 2. (W) A unit of power equal to that available when one joule of energy is expended in one second. 1 W = 1 volt-ampere; 746 W = 1 horsepower (hp). Named after the Scottish engineer James Watt (1736–1819). ThesaurusAntonymsRelated WordsSynonymsLegend: Noun 1. watt - a unit of power equal to 1 joule per second; the power dissipated by a current of 1 ampere flowing across a resistance of 1 ohm power unit - a measure of electric power milliwatt - a unit of power equal to one thousandth of a watt kilowatt , kW - a unit of power equal to 1000 watts H.P.

, horsepower , HP - a unit of power equal to 746 watts 2. Watt - Scottish engineer and inventor whose improvements in the steam engine led to its wide use in industry (1736-1819) a 100-watt light-bulb → une ampoule de 100 watts watt [wɒt] n → watt m inv watt (wot) noun (abbreviated to W when written) a unit of power, especially of heat or light.

watt واط: وَحْدَة القُدْرَه الكَهْرُبائِيَّه ват watt watt das Watt watt βατ vatio vatt وات watti watt וַוט ताप या प्रकाश की एक इकाई vat watt watt vatt watt ワット 와트 vatas vats watt watt watt wat واټ (دبريښنا دميچ كولو يوه كې او واحد watt watt ватт watt vat vat watt หน่วยวัดกำลังไฟฟ้า vat (光或熱計量單位)瓦特 ват بجلی کا یونٹ oát, đơn vị điện năng （电的计量单位）瓦特 Want to thank TFD for its existence? Tell a friend about us , add a link to this page, or visit the webmaster's page for free fun content . Link to this page: horsepower References in classic literature ?

With the spirit of prophecy upon me, I could look into the future and see her erect statues and monuments to her unspeakable Georges and other royal and noble clothes-horses, and leave unhonored the creators of this world -- after God -- Gutenburg, Watt, Arkwright, Whitney, Morse, Stephenson, Bell. View in context The land of Shakespeare, Milton, Bacon, Newton, Watt, the land of a host of past and present abstract philosophers, natural philosophers, and subduers of Nature and Art in their myriad forms, called to Mr Sparkler to come and take care of it, lest it should perish. View in context Nevertheless, not three days previous, Bildad had told them that no profane songs would be allowed on board the Pequod, particularly in getting under weigh; and Charity, his sister, had placed a small choice copy of Watts in each seaman's berth. View in context Watts asserts to be a personal habit of Satan when people have idle hands, she proceeded to knit most energetically, shutting her lips together in a way that said, as plain as words could, "You needn't try to make me speak.

What is a power unit "joule per second" (J/sec) T T ? 1 joule per second = 0.0009478171194 british thermal unit per second 1 J/sec = 0.0009478171194 btu/sec T T ? 1 joule per second = 0.05686902716 british thermal unit per minute 1 J/sec = 0.05686902716 btu/min T T ? 1 joule per second = 3.41214163 british thermal units per hour 1 J/sec = 3.41214163 btu/h T T ? 1 joule per second = 0.000101931042 boiler horsepower 1 J/sec = 0.000101931042 BHP T T ?

1 joule per second = 0.737562149 foot-pound per second 1 J/sec = 0.737562149 ft-lb/sec T T ? 1 joule per second = 44.2537289 foot-pounds per minute 1 J/sec = 44.2537289 ft-lb/min T T ? 1 joule per second = 2 655.22373 foot-pounds per hour 1 J/sec = 2 655.22373 ft-lb/h T T ? 1 joule per second = 1 000 000 000 000 picowatts 1 J/sec = 1 000 000 000 000 pW T T ? 1 joule per second = 1 000 000 000 nanowatts 1 J/sec = 1 000 000 000 nW T T ?

1 joule per second = 1 000 000 microwatts 1 J/sec = 1 000 000 µW T T ? 1 joule per second = 1 000 milliwatts 1 J/sec = 1 000 mW T T ? 1 joule per second = 100 centiwatts 1 J/sec = 100 cW T T ? 1 joule per second = 10 deciwatts 1 J/sec = 10 dW T T ? 1 joule per second = 1 watt 1 J/sec = 1 w T T ? 1 joule per second = 0.1 dekawatt 1 J/sec = 0.1 daW T T ? 1 joule per second = 0.01 hectowatt 1 J/sec = 0.01 hW T T ? 1 joule per second = 0.001 kilowatt 1 J/sec = 0.001 kW T T ?

1 joule per second = 1.0 × 10-6 megawatt 1 J/sec = 1.0 × 10-6 MW T T ? 1 joule per second = 1.0 × 10-9 gigawatt 1 J/sec = 1.0 × 10-9 GW T T ? 1 joule per second = 1.0 × 10-12 terawatt 1 J/sec = 1.0 × 10-12 TW T T ? 1 joule per second = 1.0 × 10-15 petawatt 1 J/sec = 1.0 × 10-15 PW T T ? 1 joule per second = 1 000 000 000 000 picojoules per second 1 J/sec = 1 000 000 000 000 pJ/sec T T ?

1 joule per second = 60 000 000 000 000 picojoules per minute 1 J/sec = 60 000 000 000 000 pJ/min T T ? 1 joule per second = 3.6 × 10+15 picojoules per hour 1 J/sec = 3.6 × 10+15 pJ/h T T ? 1 joule per second = 1 000 000 000 nanojoules per second 1 J/sec = 1 000 000 000 nJ/sec T T ? 1 joule per second = 60 000 000 000 nanojoules per minute 1 J/sec = 60 000 000 000 nJ/min T T ?

1 joule per second = 3 600 000 000 000 nanojoules per hour 1 J/sec = 3 600 000 000 000 nJ/h T T ? 1 joule per second = 1 000 000 microjoules per second 1 J/sec = 1 000 000 µJ/sec T T ? 1 joule per second = 60 000 000 microjoules per minute 1 J/sec = 60 000 000 µJ/min T T ? 1 joule per second = 3 600 000 000 microjoules per hour 1 J/sec = 3 600 000 000 µJ/h T T ? 1 joule per second = 1 000 millijoules per second 1 J/sec = 1 000 mJ/sec T T ?

1 joule per second = 60 000 millijoules per minute 1 J/sec = 60 000 mJ/min T T ? 1 joule per second = 3 600 000 millijoules per hour 1 J/sec = 3 600 000 mJ/h T T ? 1 joule per second = 60 joules per minute 1 J/sec = 60 J/min T T ? 1 joule per second = 3 600 joules per hour 1 J/sec = 3 600 J/h T T ? 1 joule per second = 0.001 kilojoule per second 1 J/sec = 0.001 kJ/sec T T ? 1 joule per second = 0.06 kilojoule per minute 1 J/sec = 0.06 kJ/min T T ? 1 joule per second = 3.6 kilojoules per hour 1 J/sec = 3.6 kJ/h T T ?

1 joule per second = 1.0 × 10-6 megajoule per second 1 J/sec = 1.0 × 10-6 MJ/sec T T ? 1 joule per second = 6.0 × 10-5 megajoule per minute 1 J/sec = 6.0 × 10-5 MJ/min T T ? 1 joule per second = 0.0036 megajoule per hour 1 J/sec = 0.0036 MJ/h T T ? 1 joule per second = 1.0 × 10-9 gigajoule per second 1 J/sec = 1.0 × 10-9 GJ/sec T T ? 1 joule per second = 6.0 × 10-8 gigajoule per minute 1 J/sec = 6.0 × 10-8 GJ/min T T ? 1 joule per second = 3.6 × 10-6 gigajoule per hour 1 J/sec = 3.6 × 10-6 GJ/h T T ?

1 joule per second = 1.0 × 10-12 terajoule per second 1 J/sec = 1.0 × 10-12 TJ/sec T T ? 1 joule per second = 6.0 × 10-11 terajoule per minute 1 J/sec = 6.0 × 10-11 TJ/min T T ? 1 joule per second = 3.6 × 10-9 terajoule per hour 1 J/sec = 3.6 × 10-9 TJ/h T T ? 1 joule per second = 0.239005736 calorie per second 1 J/sec = 0.239005736 cal/sec T T ? 1 joule per second = 14.3403442 calories per minute 1 J/sec = 14.3403442 cal/min T T ? 1 joule per second = 860.420652 calories per hour 1 J/sec = 860.420652 cal/h T T ?

1 joule per second = 0.000239005736 kilocalorie per second 1 J/sec = 0.000239005736 kcal/sec T T ? 1 joule per second = 0.01434034416 kilocalorie per minute 1 J/sec = 0.01434034416 kcal/min Units: W the SI symbol for the watt (see below). wah a traditional unit of distance in Thailand, now aligned with the metric system as exactly 2 meters (6.562 feet ). This unit is the Thai version of the fathom . It is seen mostly in connection with the talangwah or square wah (4 square meters or 4.784 square yards), a common unit of area in Thailand. Wales in Britain, Wales has long served as an informal unit of area, much as Rhode Island has been used in the U.S. Wales has an area of about 8015 square miles or 20 760 square kilometers; it is 7.67 times the size of Rhode Island.

wan a unit of quantity in China equal to 10 000. In Chinese, the wan is used much as the thousand is used in the West, as a basic unit for large quantities. Thus 100 000 is 10 wan, and 1 000 000 is 100 wan. However, as in the case of the Greek word myrios (myriad), the word wan is also used in Chinese to mean an indefinitely large number. watch [1] a traditional unit of time, defined as the time a sentry stands watch or a ship's crew is on duty. In ancient Rome, the night was divided into four watches, each roughly three hours long. More recently, one watch is usually equal to 4 hours on both land and sea. At sea, the evening watch (16-20 hours, or 4-8 pm) is often divided into two shorter watches called "dog watches." When dog watches are in effect, sailors will have watch assignments that rotate through the day instead of falling at the same hours every day. Watches at sea are divided into 8 bells (4 bells for dog watches).

The word watch is derived from an old English word wæccan which meant "stay awake." watch [2] another name for a shift . This use was popularized in the U.S. by CNN Headline News and by the NBC television series Third Watch. water column (WC) a notation seen in pressure measurements. See inch of water , centimeter of water , or millimeter of water . water horsepower (whp or Whp) a unit of power used in the U.S. primarily in rating pumps. If a pump has a capacity of Q gallons per minute and develops a pressure ("head") of P feet of head , then its power rating is QP/3956 water horsepower. This calculation assumes the density of water to be 8-1/3 pounds per U.S. gallon, which is approximately correct but not exact. As a result, the water horsepower equals 746.043 watts (550.253 foot pounds per second), slightly more than the ordinary mechanical horsepower . water inch a traditional unit of water flow, supposed to equal the flow through a circular opening one inch in diameter, assuming the flow is caused only by gravity.

However, this flow rate also depends on the pressure of the water above the opening. One estimate is 14 U.S. pints per minute or 2520 U.S. gallons per day [2] (this is equivalent to 6.624 liters per minute); this estimate assumes the water level is constantly 1/12 inch (1 line ) above the top of the opening. Another is 500 cubic feet per day, which is much larger: 3740 U.S. gallons per day or about 9.832 liters per minute. The latter estimate may depend on a mid-nineteenth century British engineering definition which required the hole to be centered 1 inch and 1 line below the water surface, placing the top of the opening 7/12 inch (7 lines) below the water level. See also miner's inch . watt (W) [1] the SI unit of power. Power is the rate at which work is done, or (equivalently) the rate at which energy is expended. One watt is equal to a power rate of one joule of work per second of time.

This unit is used both in mechanics and in electricity, so it links the mechanical and electrical units to one another. In mechanical terms, one watt equals about 0.001 341 02 horsepower (hp) or 0.737 562 foot-pound per second (lbf/s). In electrical terms, one watt is the power produced by a current of one ampere flowing through an electric potential of one volt . The name of the unit honors James Watt (1736-1819), the British engineer whose improvements to the steam engine are often credited with igniting the Industrial Revolution. watt (W) [2] a unit used to describe light bulbs. Incandescent light bulbs have always been sold in standard wattages such as 100 watt and 60 watt. These bulbs are now being replaced by more efficient sources such as compact fluorescent (CFL) or light-emitting diode (LED) "bulbs." For marketing purposes, these devices are often marked with the wattage of the incandescent bulbs which they are intended to replace.

(CFLs require very roughly 1/4 the power of incandescent bulbs, and LEDs very roughly 1/8). watt hour (W·h) a common metric unit of work or energy, representing the energy delivered at a rate of one watt for a period of one hour. This is equivalent to exactly 3.6 kilojoules (kJ) of energy, or about 3.412 141 Btu , 0.859 846 (kilogram) Calories , or about 2655 foot pounds. watt year (W·yr) a metric unit of energy, representing the energy delivered at a rate of one watt for a period of one year. The watt year, equal to about 31.5569 megajoules (MJ), is used in discussions of the rate of global warming. wave or wavelength a unit of relative distance equal to the length of a wave: this could be a light wave, a radio wave, or even an ordinary water wave. In communications engineering, the length of an antenna is often stated in waves.

In optics, the surfaces of lenses and mirrors are sometimes required to be polished to within a very small fraction of a wavelength of green light (546 nanometers). weber (Wb) the SI unit of magnetic flux. "Flux" is the rate (per unit of time) at which something crosses a surface perpendicular to the flow. If the something is a magnetic field, then the magnetic flux across a perpendicular surface is the product of the magnetic flux density, in teslas , and the surface area, in square meters. If a varying magnetic field passes perpendicularly through a circular loop of conducting material, the variation in the field induces a electric potential in the loop. If the flux is changing at a uniform rate of one weber per second, the induced potential is one volt . This means that numerically the flux in webers is equal to the potential, in volts, that would be created by collapsing the field uniformly to zero in one second. One weber is the flux induced in this way by a current varying at the uniform rate of one ampere per second. The weber is a large unit, equal to 108 maxwells , and practical fluxes are usually fractions of one weber.

(Because of this, when we want to induce an electric potential in a conductor with a changing field, as we do in all electric generators, transformers and electric motors, we loop the conductor into hundreds of coils, thus adding together the small voltages induced in each loop by the changing field.) The unit honors the German physicist Wilhelm Eduard Weber (1804-1891), one of the early researchers of magnetism. week (wk) a traditional unit of time equal to seven days [3]. The custom of the seven-day week, with one day set aside for rest and religious observance, goes back more than 3000 years to the ancient civilizations of the Middle East. The seven days originally had an astrological significance; there is one day for each of the five visible planets and one each for the sun and the moon. Christians and Moslems inherited the seven-day cycle from the Jewish religion. The Romans picked up the idea from the Persians and were using the week as early as the first century. When the Emperor Constantine legalized Christianity in the Roman Empire, early in the fourth century CE , the Christian version of the week, with Sunday as the day of religious observance, became official throughout the Empire.

Since none of the units of Roman date-keeping (the month , the quarter , and the year ) equal a whole number of weeks, this made it necessary for the first time to have tables (we call them calendars!) showing the ever-changing relationship between the days of the week and the dates of the month. Link: The World Calendar Association promotes efforts to reform the calendar so that weeks and months would have a fixed relationship. Link: A perpetual calendar provides calendars for any month and year in the current (Gregorian) calendar. Note: There are different traditions as to which day of the week is the first. In the U.S., most calendars show Sunday as the first day of the week, but the International Organization for Standardization (ISO) specifies that the week begins with Monday. There are also different ideas about how to number the weeks of the year, which is sometimes necessary for business purposes. The official solution to this question is that week 1 of the year is the week (beginning with Monday) that contains January 4. By this convention, week 1 of 2010 will be the week January 4-10, 2010. Link: ISO 8601 from Markus Kuhn.

werst a German spelling, sometimes seen in English as well, for a Russian distance unit, the verst . wet ton, dry ton units used to measure sludge, slurries, compost, and similar mixtures in which solid material is soaked with or suspended in water. A wet ton is an ordinary ton [1] of the material in its natural, wet state; a dry ton is a larger quantity of the slurry, containing a ton of the solid material plus a variable amount of water. wey a historic English unit. The word comes from the old English wæge, meaning weight, and originally the wey was a weight unit representing about two hundredweight . Later it came to be used as a volume unit for a variety of dry commodities. Its size varied. Roughly speaking, the wey represented about 40 bushels , 2 cubic yards, or 1.5 cubic meters. whole note a unit of relative time in music, also called a semi breve . whole step, whole tone alternate names for the step [2], a unit used in music to express the ratio in frequency between two tones. Winchester bushel the traditional British name for what is now the U.S.

bushel; see bushel [1]. Winchester quart an informal British unit of volume used for certain chemicals shipped in cylindrical, narrow-necked bottles. A Winchester quart originally held 2 British Imperial quarts (about 2.273 liters); now it generally holds exactly 2.5 liters. This unit is not related to the Winchester bushel, and the origin of its name is not known. wind chill temperature index (WCTI) a measurement of the combined cooling effect of low air temperature and wind on the human body. The index was first defined by the American Antarctic explorer Paul Siple in 1939. As originally used by U.S. meteorologists, the wind chill index (WCI) was computed from the temperature T (in °F) and wind speed V (in mi/hr) using the formula: WCI = 0.0817(3.71 sqrt(V) + 5.81 - 0.25V)(T - 91.4) + 91.4. In 2001, U.S. and Canadian meteorologists agreed on a revised definition of the wind chill temperature index (WCTI). The U.S.

version, with the temperature in °F and wind speed in miles per hour, is WCTI = 35.74 + 0.6215T - 35.75V0.16 + 0.4275TV0.16. The Canadian formula, with temperatures in °C and wind speed in km/h, is WCTI = 13.12 + 0.6215T - 11.37V0.16 + 0.3965TV0.16. A chart is provided. The new formula gives higher temperatures, but these temperatures, unlike the old WCI numbers, are supported by clinical experiments. wine gallon a former English unit of volume equal to 231 cubic inches. The wine gallon was adopted as the official gallon for liquid measurement in the United States, so now it is usually called the U.S. liquid gallon . wineglass an informal unit of volume used in U.S. bartending, equal to 4 (U.S.) fluid ounces or about 118.3 milliliters. This unit is the same as the traditional gill .

wineglassful a unit of volume used in British food recipes. The wineglass holds 2.5 (British Imperial) fluid ounces , 5 tablespoonfuls, 1/2 gill , or about 71.0 milliliters. One wineglassful is equal to 0.30 U.S. cup . word [1] a unit of information in typing. Typing speed is usually expressed in words per minute (wpm). For this purpose, a "word" is considered to be exactly 5 characters (spaces included). For example, a typing speed of 30 wpm is equivalent to 150 characters per minute or a keystroke rate of 2.5 hertz . word [2] a unit of information in computer science, often representing the amount of data processed by a computer in a single instruction. The size of a word in bits is a characteristic of the computer system. working level (WL) a unit of radiation exposure used for measuring exposure to radon gas in the U.S.

One working level represents a concentration of short-lived radon decay products in one liter of air resulting in the ultimate emission of 1.3 x 105 MeV or 20.8 nano joules (nJ) of energy. Exposures are measured in working level months (WLM). Cumulative exposure of workers is measured in working level months (WLM), representing exposure to one working level for 170 hours. In underground mining, U.S. law says miners must not be exposed to levels exceeding 1 WL and cumulative exposure must not exceed 4 WLM per year. In other industries, exposures are limited to 0.3 WL. In homes, the U.S. Enviromental Protection Agency recommends exposure levels not exceeding 4 pCi/L, or 0.04 WL. workweek or work week [1] a unit of time equal to the length of time a person "normally" works in a week.

In many countries and in many industries, a specific number of hours, such as 35 or 40, constitutes a workweek either by law, by contract, or by custom, and workers who work more than that during a calendar week are entitled to be paid overtime wages. workweek or work week [2] a unit of time equal to the number of working or business days in a week (see above). During the nineteenth century the workweek was usually 6 days [3] but it is now 5 or 4 in most countries. Of course, individual workweeks are shorter if civil or religious holidays occur during the week. wrench sizes wrenches in the U.S. are sized in fractions of an inch or in multiples of 1/4 inch, while metric wrenches are sized in millimeters. WS Watt (unit) - definition of Watt (unit) by The Free Dictionary Watt (unit) - definition of Watt (unit) by The Free Dictionary Related to Watt (unit): MW(e) watt An SI-derived unit of power equal to one joule per second. See Table at measurement . [After James Watt.] (wɒt) n (Biography) James.

1736–1819, Scottish engineer and inventor. His fundamental improvements to the steam engine led to the widespread use of steam power in industry watt (wɒt) n (Units) the derived SI unit of power, equal to 1 joule per second; the power dissipated by a current of 1 ampere flowing across a potential difference of 1 volt. 1 watt is equivalent to 1.341 × 10–3 horsepower. Symbol: W [C19: named after James Watt] watt (wɒt) n. the SI unit of power, equivalent to one joule per second and equal to the power in a circuit in which a current of one ampere flows across a potential difference of one volt. Abbr.: W , w [1882; after J. Watt ] Convert watt to joule/second - Conversion of Measurement Units ›› More information from the unit converter How many watt in 1 joule/second? The answer is 1. We assume you are converting between watt and joule/second. You can view more details on each measurement unit: The SI derived unit for power is the watt.

1 watt is equal to 1 joule/second. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between watts and joules/second. Type in your own numbers in the form to convert the units! ›› Want other units? You can do the reverse unit conversion from joule/second to watt , or enter any two units below: Enter two units to convert From: I'm feeling lucky, show me some random units . ›› Definition: Watt The watt (symbol: W) is the SI derived unit for power. It is equivalent to one joule per second (1 J/s), or in electrical units, one volt ampere (1 Vï¿½A). ›› Metric conversions and more ConvertUnits.com provides an online conversion calculator for all types of measurement units. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types.

Examples include mm, inch, 100 kg, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more! Joule | Define Joule at Dictionary.com joule noun, Physics. 1. the standard unit of work or energy in the International System of Units (SI), equal to the work done by a force of one newton when its point of application moves through a distance of one meter in the direction of the force: equivalent to 10 7 ergs and one watt-second. Abbreviation: J, j. 1885-90; named after J. P. Joule Joule James Prescott, 1818–89, English physicist. Dictionary.com Unabridged Examples from the Web for joule Expand Historical Examples I have omitted all reference to the numerous minor papers with which Mr. joule has enriched scientific literature. Lord Kelvin Andrew Gray This is the law known as the conservation of energy which has been built up by Helmholtz, Thomson, joule and others.

Aether and Gravitation William George Hooper One watt is equivalent to one joule per second or 60 joules per minute. British Dictionary definitions for joule Expand noun 1. the derived SI unit of work or energy; the work done when the point of application of a force of 1 newton is displaced through a distance of 1 metre in the direction of the force. 1 joule is equivalent to 1 watt-second, 107 ergs, 0.2390 calories, or 0.738 foot-pound J Word Origin C19: named after James Prescott Joule Joule noun 1. James Prescott. 1818–89, English physicist, who evaluated the mechanical equivalent of heat and contributed to the study of heat and electricity Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd.

1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Word Origin and History for joule Expand unit of electrical energy, 1882, coined in recognition of British physicist James P. Joule (1818-1889). Online Etymology Dictionary, © 2010 Douglas Harper Abbr. J The International System unit of electrical, mechanical, and thermal energy. A unit of electrical energy equal to the work done when a current of 1 ampere is passed through a resistance of 1 ohm for 1 second. A unit of energy equal to the work done when a force of 1 newton acts through a distance of 1 meter. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

(j l, joul) The SI derived unit used to measure energy or work. One joule is equal to the energy used to accelerate a body with a mass of one kilogram using one newton of force over a distance of one meter. One joule is also equivalent to one watt-second. Joule, James Prescott 1818-1889. British physicist who demonstrated that heat is a form of energy. His work established the law of conservation of energy, stating that energy is never destroyed but may be converted from one form into another. The joule unit of energy is named for him. The American Heritage® Science Dictionary Copyright © 2002. Published by Houghton Mifflin. All rights reserved. Measurement unit conversion: joule per second Measurement unit conversion: joule per second ›› Measurement unit: joule per second Full name: joule/second The SI derived unit for power is the watt. 1 watt is equal to 1 joule per second. ›› Convert joule per second to another unit Convert joule per second to Valid units must be of the power type. You can use this form to select from known units: Convert joule per second to

Question: Which SI unit is equal to one Joule per second?
Answer: WATT